Eyeleting machine



. Filed Aug. 16, 1950 pt- 1 s. L. GOOKIN 2,612,282

EYELETING MACHINE 4 Sheets-Sheet l Invniaf: SyZvesierL Go o/rm Sept. 30, 1952 s. GOOKIN EYELETING MACHINE 4 Sheets-Shea; 2

Filed Aug. 16, 1 950 [nvenfar SylvesferL. Gag/11in y Fly. 4

4 Sijsg-Sfget 5 Sept. 30, 1952 s. 1.. GOOKIN EYELETING MACHINE Filed Aug. 16

'lhvenior." Sylvesier L. Goo/(m Sept. 30, 1952 s. GOOKIN EYELETING MACHINE 4 Sheets-Sheet 4 Filed Aug. 16, 1950 .IIIIIAWW.

- Invenibr Sylvesfer L Goo kin i atenteci Sept. 30, 195 2 UNITED I EYELETING MACHINE Sylvester L. Gookin, Quincy, Mass., assignor t 2 United Shoe Machinery Corporation, Flemington, N. J., a corporationof. New Jersey Application August 16, 1950, Serial No. 179,740

9 Claims. (01. 218-) a hole is first produced in one locality, the hole then being shifted to align with the upsetting tools or the latter being shifted to align with the hole to complete an installation. In contrast therewith an eyeleting machine of the type here under consideration omits elements and motions hitherto deemed indispensable and advantageously employs means cooperative with eyelets of a type adapted specially to punch their own holes in a work piece. It will be understood, however, that while a particular machine designed for setting aparticular fastener will be hereinafter specifically described, certain features of the invention are equally adapted for use in other types of machines and with other types of fasteners.

A primary object of this invention'therefore is to provide an improved power machine for eyeleting an imperforat e work piece, said machine to include simple and relatively inexpensive mechanism for installing what may be termed self-punching eyelets one at a time and means forfeeding the work to space the eyelets one from another. v

In accordance with this object a novel feature of the invention consists in a combinatio'n comprisingan anvil having an eyelet punching-surface, and a'pin centrally located therein and telescopically related thereto. Theanvil serves first as a punch bed against which an eyelet may be forcedto punch a hole in the work. Thereafter, the anvilperforms the usual function of upsetting and clenching the ingoing eyelet and the pinvlocated therein later ejects the pill from the throat of the eyelet. This feature does away with a separate punch and punch bed. 7

Another novel feature consists in a combination in which the aforesaid anvil and. ejector pin are utilized to feed the work step by step while installing a series of eyelets in it. This'combination includes one power actuated mechanism for moving the anvil to and frosidewise, and another for moving the pin to and fro along its axis in timed coordination with 'the sidewise strokes of the anvil, These motions of the anvil and the individual motions of the pin are compounded to produce a four-way'orbital motion of the, pin which, e ,fter ejectlng a pill from eacheyelet at the conclusion of the A machine of the type under consideration cludes a racewayfor supplying eyelets to a setting tool provided wltha spindle, and performs its duties in the following order: thespindle impalesan eyelet on the raceway; the raceway'recedes; the setting .tool drives the eyelet through the work and against the anvil; the pin in the anvil: advances through the clenched eyelet as the sets ting tool recedes, thereby ejectingthe pill fromthe eyelet; a presser foot braces the work against. the thrust of the 1 ejector pin; the anvil moves sidewise away from the setting locality while the ejector pin is in the throat of the clenched eyelet. thereby feeding the work; and the ejector is withdrawn from the eyelet as the feeding stroke is terminated, and is finally returned toward the setting position, being maintained below thelevel of the work table until the 'next eyelet has been clenched.

It will be understood that, though not so trated herein, the invention also comprehends' the setting of more, than one eyelet atja time. It will become apparent that a gang'raceway could as well be substituted for the singlejrabe' way employed in the embodiment to be described;

thereby providingimeans for delivering a se es of two ormore of eyelets one at a time n each s rows, and cooperative anvils andstting tools would then be provided; in a manner similar to that hereinafter described but adapted simulta'ne oufsly to set 'theeyelets in each row.

The above and other features of the invention together with novel combinations and arrange; mentsof parts willnow be more fully described with reference to a preferred-embodiment an'd the accompanying drawings thereof, inwhich: 4115' Fig. 1 is a front elevation of amachine 'illustrative of the invention; I

elements shown in Fig. 1;

' Fig. 2.1sa detached front elevation of jcertain Fig. 3 is a side elevation of the I tions beingomitted-forthe sake of clarity;

Fig. 4 is an enlarged'front elevationof the ma;

chine, portions being broken away to indicate de .tails of construction and showing... the :relative 3 positions of elements ator': near'ther.end;;of..a

feed stroke; i

Figs. 5,; 6,.7 and 8 arefurther enlargedfront elevations, partially'in section, indicating relative positions of parts shown in Fign l butzatother and successive stages in the the machine, and

clenching operation, feeds the work one step by its engagement with the throat of the eyelet last clenched. 1.

operating 7 cycle a. of

operativelyg relatedfthereto, an eyelet-setting tool l4 havingea' spri-ng-pressed spindle I6. for "impaling an eyelet IS on a raceway 20, an anvil 22 having an annular surface 24 for upsetting and clenching an eyelet, a plunger 26 by which the tool I4 is carried above the table ID. a fixed bear ing 28 by which the plungercandithe, toolzld are-1 guided endwise toward and fmm-"a'settinglocality; 15. in the plane of the table, a franiiflbf'which" the bearing 28 is a part. and othenelements;

hereinafter described.

The anvil 22 is amxed to a horizontally-mov V able block 32 by which it is carried sidewise to andgfrom thee setting- 1 locality; the: block-"i being; installed-Jim:aegroovevin :theyframefl ii: andhavingk a bearing therein: by..WhiCh theanvilis: maintained/atiar-constant level: The upper portion of theiia nvii occupies2a*-.slott34:(Fig; 3) inxthe table Hiiandiisllocatediatzalevel where'zit'will support a-z'smalli areaaofia work pieceiw overlying the" tableza For: a'epurpose hereinafter explained the level unwrap-1e :l Ui-iSI slightl'yilower inithe locality as =(F igs'z 7 emai s): beneath the eyfele't setting war I .Te proviae for' movingthe anvil-side wise tc i and fro -ai pin 3E is afiixed to' theblock 82 aiid it 'xtnds tlirou'gh'a-slot in-aria-rm 38.

hiarteedescr beagjbywhi h feeding steps of variable *r'nay-be 'impartedto the work.

and is telescopically' related' thereto;

The'uppef portion of the pm is smaller" than the throatof an eyelet l8 and is nested in .the'a'nvil w 'e'aii eyeletiistpenetratins? thefwdrk and there- Ithe" 'tooljj lf'ha'sjrish slightly. from y are-operated -by a. re'gulatable linkage',- here-' 4*4 g: 9") isi located centrallydn' the slight alteration, be made to remain in operation as long as the treadle-rod is depressed.

The cam 58 engages a follower on the end of an angular arm 62 (Figs. 1 and 4) mounted on a fulcrum pin 5d and said follower is biased against the cam by a spring 56. The motion of the follower is communicated to the rockshaft by, an arm 68 and-a rod lil connecting the latter and the follower.'..aThe ro'ckshaft 50ia'nd. the two arms 48 and 68 are all rigidly related.

The plunger 26 and the crank-pin 54 are operativelyconnected by a, pitman 12 that also operatesth'eraceway 20. For the latter purpose the pitmanisprovidedwith a pivot pin 14 with which thejraceway 'is'connected by a link 16. The race- Way JZU is therbyizoscillated about a fixed pivot pin 18 by which. it is supported, and the lower endofthe raceway is'shifted to and from the path of'the spindle It.

The eccentric 56 and the arm 40 are connected by. a linkage that includes adjustable means for regulating the. length oflthe strokes imp'arted to.

the anvil; The power-actuated ele'm'eritso'f this". linkage-are,an ,eccentric rod-.80 (Figs. 3 and .4) ,a.

link (l2 connectirigthe. latter and. the arrnl a pivot pin-.84 (Fig.4) forminga. joint ofithe members 80-. and 82- and. a. forked. member? 86,.

This-forkedmmber is constrained to" swihgaboutl a pivot member 88 by which it is supported andi its. efiectis to guide the pin 8 4. in anarcuata path. As longasthis path remains.- constant the amplitudetofgthel Work-feeding movement of the.

anvi-LZ 2 wi1l be eonstant,'-,but when. the path-is.

changed by shifting} the v pivot I member '88 to. another location-,j-ther amplitude of that feeding. movement will .be changed. For: this purpose the pivot member 38- ,is carriedtby a regulator made up of two; rigidly. relatedjarms 9i] and. 92 (Fig'st 1 3 and v 4) and a; rockshaft .94 connectingthem The rockshaft 94- is journaled l in the frame 30 and v the. regulator may be fastened. at various positions of adjustment by inserting an anchoring pin 536 through aslot inthearm 2-;andint'o any one; of a plurality of holes ina fixed anchoring e a his; linkage. is so organized that. the 'righthand-limit; of travel of the an-vil as well s .the left-handlimitg; maybe shifted by changing: the

' angular relationgof the two arms38-and;4ll-.- For assemblage that includes ai=maimdrive shaft..52, I

arzfiyanxkiwpimgflw for, operating -the ..tool; [4 an eccentricgfifiifor; movingiothe'l anvil 2-22 to and .fro sidewis'egande-jazcam :58:for.aoscillating :the .ro'ckmar-1350a; The 'zshaftn52fisJournale'd: in bearings inithetframez jfl'wand is provide'd' with a trea'dle operated: clutch 1B0 (Pige- 3 1 preferably of a type t that will enable the machine to ruri as many close'dtinill S. "Lettei s" Patent 2 ,-274,-l4(l, granted February 24, 1942, on my application-oduldg 'with this-purposeeach of thesearms is bor ed-to 'receive a frictional binder which consists of a dra -w bolt I00 (-Fig; -;3) having. a screw-thread; for engagement with garnut IE2; When the parts-are:assem.-, bled theidrawvbolt. mayibe adraw'n tightly; againstthe:rockshaft 42-1by settingaupthe nut"! 02:

The radiustof. theforke'd membera -flbaand th'at' of. the; arm 90 .are equal eandr'theilength 'of the eccentric rodi8D may be regulated Ito?- arrestithe pin 84iat' various points inits-arc of travel includ:- ing oiie point iniiwhich: the pm 8K will b'e'coaxial with" the rocksha'ft 94 or the a'djustable" regu lator; one-end": of the eccentrici-mow is threaded and 'screwe'd into an eocentric stra'pil U4, and'theiothei end; also threadedlds screwed into ending item which" the-pin 84* has a' beairliig l By serewingsthe rod 8fl in or out ofithestrap HM orrct'ating the fitting losiboth 'limits of th or tra'vel-pf thepirtsamavbe shirted sp ct to the fixfed elocatio'jm of the wd-sen lielrocli' "I'headjustabilityof tl'i-jdescribed'cdmiectidiis provides for obtaining coaxiai relation (it-the pin 84 an the rockshaft' 943st the-instant when the anvi1- 22 is aligned with the tool I4: Th' l'erigtli er the e'ecentrierdd should normany be adiusted to carry the pin 84 to the level of the axis of the rockshaft 94 when the setting tool I4 is at its lowest point, and the angular relation of the arms 38 and 40 should be adjusted to carry the anvil to its position of true alignment with the setting tool I4. When special conditions exist other adjustment may be found necessary as, for example, to compensate for vibration, lost motion, tolerance or wear in parts, or to allow for whip or overthrow. The path of the feed finger 44 will change for each of the diilerent feed spacings but in general the adjustment will befound satisfactory when the tool I4 and the anvil '22 cooperate in a manner such that eyelet setting may commence a little ahead of their alignment and finish when they are substantially in line. I

The presser foot I2 is afllxed to one of a pair of parallel rods'I08 that have individual bearings bored in the frame 30. A compression spring III! surrounding one of these rods maintains pressure of the presser footagainst the work-supporting table I0 except when the foot is raised. For the latter'purpose a block H2 is aflixed to the rods I08, a recess is formed in the frame to provide clearance I for the block, a lever H4 is mounted on a fulcrum stud IIS (Fig. 3) set into the frame, and a pin H8 is set into the block to .be engaged by the lever. If a treadle is provided it may be connected to the rear end of the lever M4 by a cha'inor cable I20 only a portion of which is shown in Fig. 3, the lever having a pin Hi2 for that purpose. As indicated in Figs. ,5, 6 and 7 the presser foot is forked and arranged to straddle the setting tool I4 when the latter is fully. depressed. The pressure exerted by the spring III! is constant but not so great as to require retracting the presser foot during workfeeding stages, since the work-engaging surfaces of the work-table and the foot are smooth, and the work will slide when drawn by the pin 30. As further aid in feeding the work W along a line a straight-edged back gauge I24 may be secured to the work table II]. Operating power is preferably supplied from any suitable source via a pulley and a belt I26 (Fig. 3).

When the elements occupy their initial positions (Figs. 1 and 4) the crank-pin 54 is at or near top center, the anvil 22 is at or near the left-hand limit of its range, and the pin is about to be, or inother cases has just been, fully depressed. In consequence of tripping the clutch 60, the plunger 26 descends, the spindle I8 impales an eyelet I8 on the raceway 20, the raceway recedes, and the anvil 22 moves to the right. If a workpiece W lies between the presser foot l2 and the work-table ID, the anvil 22 and the pin 44 will travel under it without touching it until the ingoing eyelet I8 strikes the work in the locality of the table I0 and depresses a small area of work into contact with a sharp circular edge 23 (Fig. 9) of the anvil. This sharp edge forms the inner boundary of the clenching surface 24, and the outer boundary of the central bore in which the pin 44 slides.

The depressed locality 35 of the work table assures that the work will not be permanently bunched or impressed with the periphery of the setting tool I4 or anvil 22, and also aids the anvil and pin 44 in subsequently avoiding any return drag on the under surface of the work.

Eyelets for this type of machine are preferably unscored, and the surface 24 of the anvil is designed to clench them without splitting them into prongs. This technique is known as rollclenching. Now, since the eyelets must cut their way through a work-piece, their clenchlng ends should be initially acute and sharp,"and the workpiece should be of some material that will not cause the eyelets to be blunted, crushed or collapsed. Leather belts and cardboard products are examples in this category.

If, as may prove desirable in some instances, the anvil and the sharp end of an eyelet are concentric when they first encounter each other the actual clenching of the eyelet will tolerate a slight overtravel of the anvil to the right, that is,

beyond true coaxial relation with the tool I2.

The extent of such overtravel can be re ulated by adjusting the length of the eccentric rod' 80 or the angular relation of the arms 38 and 40. The useful effect of such overtravel is that it will provide a time interval during which the tool I4 may rise and the anvil may move slightly from right to left before leaving the setting locality. To all intents and purposes this time interval constitutes a dwell of the anvil at the setting locality and a postponement of its departure therefrom. Consequently, the lifting of the pin 44 to eject the pill from the clenched eyelet may be postponed until the tool I4 is raised slightly from the eyelet. The work will then be braced by the presserfoot I2 against the thrust of the pin.

After the pin 44 has ejected the pill, the pinwill be maintained in the throat of the eyelet by the arm 48 while the? anvil continues its feeding stroke, but will be depressed to clear theeyelet I8, when the anvil reaches its left-hand limit of travel. The pin 44 thus executes an. orbital motion two components of which are received from the power-actuated arm 48 andtwo others from the power-actuated anvil.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. In an eyeleting machine of the type in which a power-operated tool cooperates with aclenching anvil to drive an eyelet through an imperforate area of a work-piece and clench it, a pin located centrally in the anvil and telescopically'related thereto, power-operated means for ejecting the pill from the clenched eyelet. by

thrusting said pin through the latter, and. means.

arranged to brace the work-piece against the thrust of said pin.

2. An eyeleting machine comprising an anvil having an eyelet-clenching surface, a power-operated tool arranged to drive an eyelet through an imperforate area of a work-piece and against the anvil to clench it, a pin located centrally in the anvil and telescopically related. thereto, power-operated means for ejectingthe pill from the flange end of the clenched eyelet by thrusting said pin through the latter, means arranged to brace the work-piece against the thrust of said pin, and power-operated means arranged to feed the work-piece by moving the anvil sidewise while said pin is in a clenched eyelet and while said tool is being retracted from the work.

3. An eyeleting machine comprising a poweroperated tool arranged to drive an eyelet through an imperforate area of a work-piece, an anvil arranged to brace said area against the thrust of the ingoing eyelet, the anvil having a surface formed to clench the eyelet, a pin located centrally in the anvil and telescopically related thereto, means by which said pin is normally retracted into the anvil, power-operated means for ejecting the pill from the flange end of the 

